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公开(公告)号：US20220382075A1
公开(公告)日：2022-12-01
申请号：US17804119
申请日：2022-05-26
Applicant: Alcon Inc.
Inventor： Behzad Bordbar , Kamal K. Das
IPC: G02C7/04
Abstract: Certain embodiments described herein are directed to a multifocal ophthalmic lens including a base lens having a base curvature corresponding to a base power, and a diffractive structure comprising a central zone and a plurality of annular echelettes formed on a first surface of the base lens. A radial spacing of each of the plurality of annular echelettes is constant throughout the diffractive structure.
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